Paper break control device



July 6, 1954 F. E. HowDLE ETAL 2,683,195

PAPER BREAK CONTROL DEVICE Filed Oct. 14, 1950 3 Sheets-Sheet l Hmm?) ATZ" EY July 5 1954 F. E. HowDLE ETAL 2,683,195

PAPER BREAK CONTROL DEVICE Filed 0G12. 14, 1950 3 Sheets-Sheet 2 July 6, 1954 F. E. HowDLE ETAL 2,683,195

PAPER BREAK CONTROL DEVICE Filed oct. 14, 195o 3 Sheets-Sheet 5 INVENTORS, Frede/2'@ 4 HozaaZZ /eoabre Patented July 6, 1954 2,683,195 PAPER BREAK CONTROL DEVICE Frederic E. Howdle, Milwa Jochem, Wauwatosa, Hammer, Inc., Milwa of Delaware ukee, and Theodore B.

Wis., assignors to Cutlerukee, Wis., a corporation Application October 14, 1950, Serial No. 190,117

13 Claims.

This invention relates to control devices and more particularly to paper break control devices for use in connection with machines which embody or operate upon a traveling web, as for example a web press.

A primary object of this invention is to provide an improved paper break control device of the multiple web engaging shoe type for use with web presses handling a single wide web or a plurality of parallel running narrower webs, which upon breakage of a web or part thereof functions to afford stopping of the web press.

Another object is to provide a device of the aforementioned character having a single electric switch which is operable to afford stopping of the web press by response to web breakage by any one of its web engaging shoes.

Another object is to provide a device of the aforementioned character wherein the Web engaging shoes are adjustable to various positions across the travel path of the Webs.

A further object of the invention is to provide a device of the aforementioned character wherein each web engaging shoe can be individually positioned out of operating relation to the traveling web, or all such Web engaging shoes can be brought into, and locked out of such operating relation simultaneously.

A still further object is to provide a device of the aforementioned character which may be readily adjusted within wide limits to various planes of web travel in the press.

Other objects and advantages of the invention will hereinafter appear.

The accompanying drawings illustrate a preferred embodiment of the invention which will now be described, it being understood that the embodiment illustrated is susceptible of various modifications in respect of its details without departing from the scope of the appended claims.

In the drawings:

Figure 1 is a somewhat schematic view in front elevation of the paper break control device in mounted relation to the side frames of a web press;

Fig. 2 is a view in front elevation of a right hand portion of the control device shown in Fig. l;

Fig. 3 is a View in vertical section taken along the line 3 3 of Fig. 2;

Fig. 4 is a view in vertical section taken along the line 4-4 of Fig. 2;

Fig. 5 is a view, partially in section, of a left hand portion of the control device shown in Fig. 1;

(Cl. 20G-61.18)

Fig. 6 is a view in vertical section taken along the line 6-6 of Fig. 1, and

Fig. 7 is a fragmentary view in top plan of elements shown in Fig. 6.

The paper break control device, as depicted in Fig. 1, is designed for mounting between the side frames I 0 and I I of a web press. Generally considered, the control device includes as its major components web engaging shoe assemblies A, B, C and D, supporting shafts I2 and I3, a housing I4, a bearing housing I5, bearing bracket I6, a counterweight assembly I'I and a lock-up lever assembly I 8.

Housing I4, as best shown in Figs. 2 and 4, is preferably a built up structure having an end flange I4a abutting against side frame I I to which it is attached by a plurality of bolts I 9. A cover plate I4b removably secured, as by a plurality of bolts, to the top and bottom side portions I 4c and I 4d of the housing provides for access into the interior of the housing. The end portion I4e of the housing is provided with a large circular opening within which fits the complementally formed portion 20a of a circular bearing plate 20. Bearing plate 2U is provided with a circular portion 2l)b of larger diameter than portion 20B, which is adapted to overlie and bear against the outer surface of portion I4e of housing I4 adjacent said opening. Portion 2|]b is provided with a plurality of bolt receiving openings 20C which lie adjacent to and are spaced equidistant about its peripheral edge; the openings 20C preferably being spaced from one another at rotary angles of 30. The outer surface of portion Ille of housing I4 is provided with six threaded openings I 4f. The openings I 4f are arranged in groups of three on opposite sides of the aforementioned large opening in portion I4e and the openings in each group are spaced from each other at rotary angles of 10 along a circular arc concentric with that along which the openings 2Ilc in plate 2U are arranged. A pair of bolts 2l penetrating openings ZUC and taking into alined openings I4f secure plate 20 to housing I4.

As best shown in Fig. 2, plate 2) is provided with a circular recess opening to the outer surface of portion 2lib and communicating with the interior of housing I4 through an opening 20d of smaller diameter formed in the portion 20a. A ball bearing 22 is adapted to seat within the aforementioned recess and is held in place by an annular plate 23 which is secured to the outer surface of portion 20D. The inner race of bearing 22 is provided with a central opening to accommodate with a pressed nt the complementally formed cylindrical portion 24a of a stub shaft Zl. Shaft 2d is also provided with a cylindrical portion 24h of smaller diameter which extends through opening iid into the interior of housing le.

As best shown in Figs. 2 and 3, a disc cam 25 is mounted on and rigidly secured to portion Elib of shaft 25: by a pin 2li. The peripheral edge of cam 2e is provided with a circular cam surface 25e and a cam notch feb. A self-contained electric switch 2l, which is rigidly secured to portion 23a of plate 2li and lies within housing iii, is proe vided with an operating member le which is nor mally biased to an outer extreme position relative to the switch housing and which has a roller follower 'lb on the end thereof adapted to engage cam 25 on the surface 25a or in the notch 251 thereof.

VAs best shown in Fig. 2, shaft i2, which in vertical cross section is of hollow square formation, fits adjacent one end thereof over the square portion 213C of stub shaft 2s and is secured to the latter by screws '2t which penetrate receiving openings in a lever plate 29 and take into alined threaded recesses formed in portion 2da of shaft 2t. Plate 2t is provided with an integral boss 2te, which is square in vertical cross section and which projects at a right angle from the portion 2th. Shaft i3, which like shaft i2 is preferably of hollow square formation in vertical cross section, fits over boss 2te of plate 29 and is secured thereto by screws 3G which penetrate receiving openings in a channel bracket 3l and take into threaded recesses formed in a guide block. 3E positioned against shaft i2 on the opposite side of the latter from bracket 3i.

As best shown in Fig. 5, bearing bracket it is provided with a flanged base ita, through which project a plurality of bolts 33 which take into threaded recesses in side frame il] for rigidly securing bracket IE to the side frame. Bracket it is also provided with a cylindrical sleeve lh within which nts a cylindrical stub shaft Stub shaft 3s is secured against rotation and axial movement in sleeve lh by a pair of set screws 35, and shaft 34 ts within a recess in bearing housing i wherein it is rigidly secured as by welding. Bearing housing l5 is provided with another recess to accommodate a ball bearing @t which is held in place insuch housing by an annular plate t1 secured to an outer surface of the housing i5. The inner race of bearing is provided with a central opening extending therethrough to accommodate with a pressed fit the complementally formed cylindrical portion (not shown) of a stub shaft 3s, which also has a square portion 33a which nts within shaft l2. Shaft 38 is secured to shaft i2 by screws 3s which penetrate receiving openings in the latter shaft and take into alined threaded recesses in the former shaft. Bearing housing l5 is also provided with a circular opening extending therethrough within which fits the cylindrical portion lita of a stub shaft il@ which is welded in place in housing l5. Shaft il@ is provided with a portion lilb of square form in vertical cross section which nts within shaft i3 and which is secured to the latter by screws fil in the manner aforedescribed in connection with shafts l2 and 33.

In view of the foregoing it will be appreciated that shaft l2 is rotatable relative to bearing housing l5 and plate 2li, whereas shaft i3 is nonrotatable with respect thereto. As will be hereafter more fully explained, the assembly com- 6, which is removably secured prising stub shaft 3, bearing housing le, shafts l and i3, and plate 2t may be positioned in of thirty-one different angularly spaced fixed positions in housing itl and bearing bracket l5.

rShe details of the web engaging shoe assemblies i, B, C and D are best shown Figs. 2, e and 7. Each such assembly includes a web enu gaging shoe Lit, of the forni best shown in Fig. to a i. ped member it which straddies and is rigifv cured to the outer race of a ball bearing inner race of bearing @il is provided with a square central opening extending therethrough to afford mounting on shaft l2 so that the slid able longitudinally on shaft i2. Associated with each of the ball bearings til and web engaging arms l2 is a slider block l5 mounted` on shaf' Each blocl; is provided with upwardly extende ing parallel side portions l5a and ad which are disposed on opposite sides the outer race of a bearing lill, a downwardly and outwardly eX- tending portion 45C and a substantially horizontally extending portion fled. rflue blocks are provided with a square opening extending therethrough to accommodate shaft and are split, as shown in Fig. 6, so that by loosening and tightening of bolts 55, the position of each such block can be changed as desired along e length of shaft i3. 1t will be appreciated that the assembly comprising a ball bearing a engaging arm Q1?. will be shifted simultaneously along shaft i2 when its associated slide lblock l5 is shifted to a new position on shaft t3.

As best shown in Figs. 6 and 7, a forireshaped member ill is rigidly secured to and straddles the cuter race of each of the bearings When an associated web engaging shoe is rotated to the broken line position designated I in Fig. 6, then a latch tip ila of its associated member cil is adapted to engage within a rectangular opening des formed in an L-shaped latch catch d3 which is mounted on a flat strip member i9 formed of spring steel. Member is secured to the upper surface of slider blocl; between the portions iba and lieb thereof, by screws fail penetrating receiving openings in a flat rigid plate 5i overlying member t9, and in the latter, and taking into threaded recesses formed in the surface fide of slider bloclr ile.

When a member il is latched in engagement with a latch catch i8 as aforedescribed, its asson ciated web engaging shoe s2 will be retained latched-up in position I. Unlatching of member el' is readily accomplished by depressing latch catch i8 downwardly toward the portion 35d of slider block thereby disengaging latch tip lll from catch QS.

Coiled tension springs 52 which are each secured at one end thereof to a member and at their other ends to adjustable eyelet screws 53, which respectively take into portions d50 of the slider blocks serve to bias associated web engaging shoes cl2 for rotary movement in to the broken line position designated 1V in Fig. 6.

Straddling the outer and inner races, and secured to the inner race or" each of the bearings lli is a U-shaped member 5e. When all of the web engaging shoes l2 are in the full line web l engaging position designated lll in 5 then shaft I2 will assume the position shown in Figs. 4 and 6. if the web W should break under any of the arms Q2, the latter and the outer race of its associated ball bearing ii will rotate anticlockwise, as viewed in Fig. 6, and its associated member 7 rotating therewith ultimately engages with an associated member 54 and thereafter the inner race of a bearing 44 and shaft I2 are caused to rotate in the anticlockwise direction. Cam 25 is thus caused to rotate anticlockwise so that the roller follower 21b of switch 21 will then aline with the broken radial line designated IV in Fig. 3 within notch 25b of cam 25, thereby effecting change in the circuit controlling position of switch 21, such as will afford stopping of the web press. After such operation shoe 42 will assume the position designated as IV in Fig. 6.

As will be appreciated, it is only required that one such web engaging shoe 42 respond to breakage of a web on which it bears in order to effect the aforedescribed anticlockwise rotation of shaft I2 and operation of switch 21. In the event the other web engaging shoes are latched-up in position I, or are bearing on unbroken portions of the saine or parallel running webs, the aforementioned anticlockwise rotation of shaft I2 will in nowise disturb the positions of the other web engaging shoes. The aforedescribed individual ball bearing mounting of each web engaging shoe on shaft I2 permits rotation of the latter relative to those shoes which are then bearing on Webs or latched-up out of engagement with such webs.

Following dropping of a web engaging shoe 42 to position IV, shown in Fig. 6, in response to web breakage, return of the same to web engaging position III is efected by manually moving the same into the latter position. It will be seen that upon moving such a shoe 42 from position IV to III that member 41 moves out of engagement from member 54, and if it were not for counterweight assembly I1, which will now be described in detail, it would be necessary to separately rotate shaft I2 back to its position depicted in Figs. 4 and 6.

As is best shown in Figs. 2 and 4, counterweight assembly I1 comprises an annular plate 55 having a square opening formed therein to accommodate shaft I2 on which it is mounted. Plate 55 is restrained against movement longitudinally on shaft I2 by screws 56 which take into threaded openings in shaft I2 on opposite sides of the plate. Plate 55 is provided with a plurality of openings 55a formed therein which are spaced at equal rotary angles of 30 about its periphery adjacent its peripheral edge. A substantially rectangular weight 51 having an arcuate slot formed in one end thereof which is slightly greater in width than the width of plate 55 to accommodate the latter therewithin, straddles plate 55 and is secured to the latter by a bolt 58 penetrating alined openings in weight 51 and an opening 55a of plate 55. For the plane of travel of the web W depicted in Fig. 6, weight 51 would preferably be positioned and secured to plate 55 as shown in Fig. 4. Weight 51 serves to partially counterbalance the bias of any one of the springs 52 of the web engaging shoe assemblies A, B, C and D. Then when all of the web engaging shoes 42 which might be in position IV are returned from such position to normal web engaging position III, shaft I2 will return to its position depicted in Figs. 4 and 6 under the influence of weight 51, thereby eliminating need for separately returning shaft I2 to such position.

As aforedescribed, each of the web engaging shoes 42 of the web engaging shoe assemblies A, B, C and D can individually be latched up in the position I depicted in Fig. 6, in which position they would be out of bearing engagement with the web W, if the latter is in the plane `depicted in Fig. 6. It might be desired to latch up certain thereof when a single or a plurality of narrow webs are run through the press requiring less than the number of web engaging shoes available.

It is also a feature of the present invention that such of the web engaging shoes 42 as are not in the individual latched-up position I can be locked-up out of working relation to traveling webs simultaneously in the broken line position designated II in Fig. 6, in which position shaft I2 would assume such a position that cam 25 would be rotated clockwise to a position where roller follower' 21h of switch 21 alines with the broken radial line designated II in Fig. 3. Such simultaneous lock-up is afforded by lock-up lever assembly I8 which will now be described in detail.

As best shown in Figs. 2 and 4, lock-up lever assembly I8 comprises the aforementioned guide block 32 which is secured to shaft I3 on the opposite side from channel bracket 3 I. Guide block 32 is provided with a circular opening 32a eX- tending lengthwise therethrough to accommodate with a free nt the cylindrical shaft 59a of lock-up lever 59. Guide block 32 is also provided with guide slots 32h and 32C, disposed on opposite sides of and merging with opening 329, and which extend from the upper end of the block to a point substantially midway between the opposite ends of the block. Lever 59 is provided with a pin 59b extending transversely of its shaft 59a, which pin is adapted to move in the guide slots 32b and 32c of block 32. A coiled compression spring 69, which is disposed about shaft 59a of lever 59 below the bottom end of block 32, bears at one end against the bottom surface of block 32 and at its other end against a flange 59c on shaft 59a of lever 59. Spring 69 normally biases lever 59 to a downward extreme position in block 32, which position is attained when the guide pin 59b abuts against the bottom ends of the slots 32b and 32c in block 32. Lever 59 is provided with a substantially spherieally shaped handle 59d which is non-rotatably secured to the lower end of shaft 59a. At its upper end, shaft 59a is preferably provided with a hemispherically shaped tip. Block 32 at its upper end is provided with shallow notches 32d disposed on opposite sides of opening 32a and at rotary angles of with respect to the slots B2b and 32C.

When lever 59 is pushed upwardly within block 32, the upper end of shaft 59a will ultimately engage with lever plate 29 on that portion of the latter depending to the left hand side of shaft I2 as viewed in Fig. 4. Further upward movement of lever 59 will thereafter effect clockwise movement of shaft I2, and consequently the members 54 of the respective web engaging shoe assemblies will engage with their associated members 41 to effect clockwise movement of the web engaging shoes 42 to position II. By the time the web engaging shoes 42 have been moved to the last mentioned position, the pin 59b of lever 59 will have moved upwardly clear of the upper end of guide block 32 and then the shoes may be locked-up in such position by rotating lever 59 until the pin 59b comes to rest within the notches 32d in block 32. Each of the shoes 42, as are not in the individual latch-up position I, will be released from such locked-up position II, simultaneously, by rotating shaft 59a of lever 59 until the pin 59b is alined with notches 32b and 32c in block 32 and then releasing lever 59 for downward movement in block 32 under the bias of spring 60.

In the aforedescribed locked-up position II of 7, web engaging shoes 42 the portion of plate 2d depending to the right hand side of shaft l2, as viewed in Fig. 4, is engaged with the hemispherically shaped upper end of a resiliently mounted stop pin which is carried by channel bracket 3l and is depressed downwardly in such bracket to some extent. Bracket 3| is provided with alined clearance openings in its upper and lower legs to accommodate pin 6|. Adjacent its upper end pin 6| is provided with a flange Ela against which bears one end of a coiled compression spring 52 which is disposed about the shank of pin Si. At its other end spring 62 bears against a washer 53 disposed with a free t about pin 6| and bearing against the upper leg of bracket 3|. Adjacent its lower end, and below the lower leg of bracket 3|, the shank of pin 6| is fitted with a washer and cotter key assembly to limit the upward movement of pin 6| in bracket 31. The relative positions of plate 29 (full lines) and pin el depicted in 1Eig. e is that assumed when active web engaging shoes 42 are bearing against the web W as depicted in Fig. 6.

While in connection with the foregoing description it was assumed that the web or webs handled by the web press were running in the plane depicted by the web W in Fig. 6, the paper break control device can be positioned so that the web engaging shoes `i2 will bear against a single web, or a plurality of parallel running webs, which are running in virtually any other plane in the of functioning in response to web breakage as hereinbefore described. As was pointed out in the foregoing, the assembly comprising stub shaft 34, bearing housing I5, shafts |2 and i3, and plate 2a may be positioned in any one of thirty-one different angularly spaced fixed positions in h using ILE and bearing bracket IS. To re-position the last mentioned assembly, it is only required that set screws 35 in sleeve |'b of bearing bracket it be loosened and the bolts 2| securing plate 2Q to housing I4 be withdrawn, and such assembly then rotated in bearing bracket i6 and housing i4 to a new position where any two openings disposed diametrically opposite the central axis of plate 2Q aline with threaded openings ifif in housing id. if the presence of weight 5l on plate 55 were disregarded the last mentioned assembly could be secured in any one of thirty-six different angularly spaced iixed positions in bearing bracket i5 and housing id. As will be appreciated, if the last mentioned assembly were positioned in another xed position from that depicted, weightv 5? would have to be correspondingly repositioned on plate 55 to insure its proper counter-balancing action on shaft I2. As a practical matter therefore, the number of different positions that can be thus effected for the last mentioned assembly is thirty-one, corresponding to a total range of position change of 310.

It should be understood that rotation of plate 2c in housing i4 a full 360 is not necessary to take care of all possible planes of web travel. if the possible range of 310 of position change is not sufficient, then the paper break control device can be reversed in its mountings on sidel frames i@ and of the web press, from that shown in Fig. i, so that housing i4 will be secured to side frame |63 and bearing bracket it will be secured to side frame We claim:

l. In a paper break control device for a printweb press and afford the same kind i ing press or the like having spaced apart side frames and a web traveling therebetween, in combination, a control switch, an operating mechanism for said switch to be supported at opposite ends on the side frames of a press and comprising a rotatable shaft and an operating part for said switch carried on said shaft, said shaft being rotatable in one direction to one extreme position to operate said switch, and an assembly comprising an anti-friction bearing having an inner race non-rotatably supported on said shaft and having an outer race, a web engaging lever supported on the outer race of said bearing, means for biasing said lever into engagement with a traveling web and aording movement of said lever to a given extreme position upon breakage of the web and cooperating means on said inner and outer races of said bearing which upon the aforementioned movement of said lever effect rotation of said shaft to one extreme position.

2. ln a paper break control device for a printing press or the like having spaced apart side frames and a web traveling therebetween, in combination, a control switch, an operating mechanism for said switch to be supported at opposite ends on the side frames of a press and comprising a rotatable shaft and an operating part for said switch carried on said shaft, said shaft being rotatable one direction to one extreme position to operate said switch, means normally biasing saidY shaft for rotation to an opposite extreme position, and an assembly comprising an antifriction bearing having an inner race non-rotatably supported on said shaft and having an outer race, a web engaging lever supported on the outer race of said bearing, means for biasing said lever into engagement with a traveling web and affording movement of said lever to a given extreme position upon breakage of the web, and cooperating means on said inner and outer races of said bearing which upon the aforementioned movement of said lever effect rotation of said shaft to said one extreme position.

3. ln a paper break control device for a printing press or the like having spaced apart side frames and a web traveling therebetween, in combination, a control switch, an operating mechanism. for said switch to be supported at opposite ends on the side frames of a press and comprising a rotatable shaft and an operating part for said switch carried on said shaft, said shaft being rotatable in one direction to one extreme position to operate said switch, means normally biasing said shaft for rotation to an opposite extreme position, and an assembly comprising an Yanti-friction bearing having an inner race non-rotatably supported on said shaft and having. an outer race, a web engaginglever supported on the outer race of said bearing, means for biasing said lever into engagement with a traveling web and affording movement of said lever to a given extreme position upon breakage of the web, and cooperating means on said inner and outer races of said bearingv-.fhich upon the aforementioned movement of said lever effect rotation of said shaft to said one extreme position, the last mentioned means upon movement of said lever from its given extreme position being rendered ineffective to permit rotation of said shaft to its opposite extreme position by the first' mentioned means.

si. In a paper break control device for a printing press or the like having spaced apart side frames and a web traveling therebetween, in

combination, a control switch, an operating mechanism for said switch to be supported at opposite ends on the side frames of a press and comprising a rotatable shaft and an operating part for said switch carried on said shaft, said shaft being rotatable in one direction to one extreme position to operate said switch, and an assembly comprising an anti-friction bearing having an inner race non-rotatably mounted on said shaft and having an outer race, a web engaging lever supported on the outer race of said bearing, spring means for biasing said lever into engagement with said web and affording movement of said lever to a mentioned element upon the aforementioned engaging with the last mentioned element to effect rotation of said shaft to said one extreme position.

5. In a paper break control device for printing presses or the like having spaced apart side frames and a traveling web therebetween, in combination, a control switch, an operating mechanism for said switch comprising a shaft rotatable in reverse directions, an operating part c in one direction to one extreme position to operate said switch and means aifording rotatable bearing support for said shaft to be secured to the side frames of a press, a second shaft supported by said means in parallel and non-rotatable relation to the first mentioned shaft, and an anti-friction bearing mounted on said rst mentioned shaft so that its inner race is non-rotatable but member slidengaging lever supported on said bearing, a spring for biasing said lever into engagement with a traveling web and affording movement of said lever to a given extreme position upon breakage of the web, an element fixed to the outer race of said bearing and an element fixed to the inner race of said bearing, the iirst mentioned element upon the aforementioned movement of said lever engaging with the last mentioned element to effect rotation of said shaft to said one extreme position.

6. The combination according' to claim 5 wherein said member is provided with a releasable catch mounted thereon with which a part of the rst mentioned element latches when said lever is moved a predetermined distance out of its given extreme position to provide for holding said lever out of working relation with a web.

'7. The combination according to claim 5 wherein the first mentioned means further includes means affording positioning of said bearing supports, said shafts and said assembly, as a unit, in a plurality of angularly spaced fixed positions about an axis paralleling said shaft.

8. In a paper break control device for a printing press or the like having opposite ends on the side frames of a press and comprising a rotatable shaft and an operating Dart for said switch carried shaft being rotatable in one direction to one eX- treme position rality of like but independent assemblies, each of which comprises an anti-friction bearing having an inner race non-rotatably supported on said shaft and having an outer race, a web engaging lever outer race of said lever into engageraces of said bearing which upon the aforementioned movement of its alone, while said shaft is out of said one extreme position, effect rotation of said extreme position.

9. In a paper break control device for a printing press or the like having spaced apart side frames and a mechanism for said switch to be supported at opside frames of a press and comprising a rotatable shaft and an operating treme position to operate said prises an anti-friction bearing having an inner race non-rotatably supported on said shaft and having an outer race, a web engaging lever supported on the outer race of said bearing, means for biasing said lever into engagement with a traveling web and affording movement of said lever to a given extreme position upon breakage ward its opposite extreme position.

10. In a paper break control device for a printing press or the like having switch, an ope-ating to be supported at opposite ends on the side frames of a press and comprising a rotatable shaft and an operating part said shaft, said shaft being rotatable in one direction to one extreme position to operate said switch, and a plurality of like but independent assemblies each of which comprises an anti-friction bearing having an inner race non-rotatably mounted on said shaft and having an outer race, a web engaging lever race of said bearing, biasing said lever into engagement with said web and affording movement of said lever to a given extreme position upon breakof said one extreme position, effect rotation of said shaft to said one eXtreme position.

l1. The combination according to claim l0 together with means to be secured to the side frames of a press to aord rotational bearing support for said shaft, a second shaft supported by the last mentioned means in parallel and nonrotatable relation to the rst mentioned shaft, and means comprising a part fixed on the first mentioned shaft, a lever, and a member iixed to said second shaft affording slidable bearing support for the last mentioned lever, said last men4 tioned lever being slidable to one extreme position to engage said part and eiect rotation of said first mentioned shaft and said web engaging levers toV non-working positions, and said last mentioned lever when in Said one eXtreme position being rotatable relative to the last mentioned member to releasably lock in said one extreme position.

l2. The combination according to claim lO together with means to be secured to the side frames of a press to afford rotational bearing support for said shaft, a second shaft supported by the last mentioned means in parallel and non-rotatable relation to the first mentioned shaft, like members included with each of said ter out of working relation with a web.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,389,998 Seymour et al. Sept. 6, 1921 2,192,819 Smith V Mar. 5, 1940 FOREGN PATENTS Number Country Date 555,306 Great Brita-in Aug. 1G, 1943 

